Prev: Signature collision between methods in superclass andinterface: suggestions?
Next: Dates in Excel using POI
From: student4life on 28 Jun 2010 07:31
Could someone show me the best way to parse the first occurrence of
dates (could be in different date formats, MM/dd/yy, yyyy/MM/dd, etc.)
in a string preferably without using regular expression? Thank you.
From: Lew on 28 Jun 2010 08:21
On 06/28/2010 07:31 AM, student4life wrote:
> Could someone show me the best way to parse the first occurrence of
> dates (could be in different date formats, MM/dd/yy, yyyy/MM/dd, etc.)
> in a string preferably without using regular expression? Thank you.

<http://java.sun.com/javase/6/docs/api/java/text/DateFormat.html>
and
<http://java.sun.com/javase/6/docs/api/java/text/SimpleDateFormat.html>

--
Lew
From: Arne Vajhøj on 28 Jun 2010 09:28
On 28-06-2010 07:31, student4life wrote:
> Could someone show me the best way to parse the first occurrence of
> dates (could be in different date formats, MM/dd/yy, yyyy/MM/dd, etc.)
> in a string preferably without using regular expression? Thank you.

DateFormat df = new SimpleDateFormat("yyyy/MM/dd");
Date d = df.parse(s);

etc..

Note that if the format includes names instead of numbers, then it
is locale specific.

Arne

From: John B. Matthews on 28 Jun 2010 10:36
In article
<24af335e-8113-466b-acab-ddc52e48cc01(a)y4g2000yqy.googlegroups.com>,
student4life <student4lifer(a)gmail.com> wrote:

> Could someone show me the best way to parse the first occurrence of
> dates (could be in different date formats, MM/dd/yy, yyyy/MM/dd, etc.)
> in a string preferably without using regular expression? Thank you.

Armed with Lew's and Arne's helpful suggestions, here is a slightly more
elaborate example that might be informative:

<http://groups.google.com/group/comp.lang.java.programmer/msg/d9f7a770213
9b48f>

Degeneracy, in the sense of indistinguishability, may be a problem when
parsing the same string using very different date formats. You may need
to flag dates that appear to parse correctly with more than one format.

--
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>
From: Arne Vajhøj on 28 Jun 2010 15:26
On 28-06-2010 11:30, Tom Anderson wrote:
> On Mon, 28 Jun 2010, student4life wrote:
>> Could someone show me the best way to parse the first occurrence of
>> dates (could be in different date formats, MM/dd/yy, yyyy/MM/dd, etc.)
>> in a string preferably without using regular expression?
>
> A regular expression is far and away the best way of doing this. Why
> don't you want to use one?

If the position of the date is unknown, then regex is a very good
choice for finding candidates.

DateFormat.parse should still be used to verify, because regex
is not the right tool to discard February 30th etc..

Arne

 |  Next  |  Last
Pages: 1 2
Prev: Signature collision between methods in superclass andinterface: suggestions?
Next: Dates in Excel using POI